Loose-leaf book.



W. A. COOKE, In.

LOOSE LEAF BOOK.

APPLICATION FILED MAR. 13, 1915.

1,172,010. r Patented Feb. 15,1916.

Fig. 1; I jig/2.

All 1-@ (D INVENTOR WITNESSES: m I By Attofneys,

WILLIAI A. COOKIE, 33., 01 NEW YORK, N. Y.

LOOSE-LEAF BOOK.

Specification 01' Letters 2mm.

Application filed March 18, 1915. Serial No. 14,128.

To all whom it mag concern:

Be it known that I, WILLIAM A.v COOKE, Jr., a citizen of the UnitedStates of America, residing in the borough of Brooklyn, county of Klngs,city and State of New York, have invented certain new and usefulImprovements in Loose-Leaf Books, of which the following is aspecification.

My invention relates to loose leaf books and has for its object toprovide an improved construction of sheet for use in such books.

My invention therefore consists in a sheet which may be held in thebinder notwithstanding the fact that the perforations for receiving theprongs have become destroyed and by the use of which sheets thatmaybecome torn at the original perforated holes may be instantaneouslyreplaced by using the opposite holes, the sheet itself takingsubstantially the same place in the book, among a number of leaves, fromwhich it was torn.

Books of this character are largely made use of because of the ease-withwhich sheets may be added or subtracted and hold sheets I which containinformation of permanent value. These sheets are frequently referred to,and the regular use to which they are subjected, coupled with the factthat they are largely employed as pocket memorandum books and areconsulted at all times, exposes the leaves to hard use and frequentlythe leaves are torn from the perforations through to the edge so thatthey are destroyed and the information which is contained on them mustbe copied on a fresh leaf and replaced in the binder causing uselesseflort. I

My invention has for its object to double the life of a sheet andtherefore render it unnecessary to substitute another sheet for onewhich may be mutilated.

Desirable forms in which my invention may be employed are illustrated inthe accompanying drawings wherein- Figure 1 illustrates my invention asapplied to a book opening at the end; Fig. 2

illustrates a like application of the invention to a book opening at theside; and Fig. 3 illustrates a modified form of sheet.

My invention is illustrated as applied to binders A and B. Binder A isof the ordinary type'opening at the ends and is usually equipped withbinding prongs or rings a. Binder B is of similar construction but opensat the sides, and usually has a slightly larger number of rings orprongs b. In the use of Patented Feb. 15, 1916.

these books leaves C are provided with perforations c at the inner edgewhich will be at the end as in Fig. 1 or at the side as in Fig. 2.

From constant use the material between the perforation 0 and theadjacent edge of the sheet may become weakened and in the course of timewill, if exposed to too clumsy handling, tear out. This is particularlya t to be the case in winter weather when t e books may be taken out ofthe pocket and handled with gloves on. In such case with the ordinarybinder it is necessary that the information on the sheets C should berecopied on a fresh page and re-inserted in the binder.

According to my invention the life of the sheet is substantially doubledand this I accomplish by providin the sheet at another edge, which isone of t e outer edges, with two auxiliary perforations D. In the caseof -leaves substantially square as in Fig. 3, the

auxiliary perforatlons may be formed in the opposite edge or they may beformed in a connecting edge or in all four edges. With a book such asillustrated in Figs. 1 and 2 the auxiliary perforations are best formedin the opposite edge, and I have so illustrated them.

It is a simple matter in case the perforations 0 become torn through tothe edge to shift the leaf and place t e same so that the perforations Dpass over he prongs a. The same operation will take place with the leafof Fig. 2 where the perforations are also along the opposite edge. InFig. 3 the perforations may be placed along all of the edges or as manyof them as desired.

It is essential to my invention that the sheet should have an auxiliaryseries of perforations placed along an edge corresponding to theoriginal binding edge which per forations are substantially the same insize and correspond in relative-position to the original bindingperforations.

It will be perceived by means of the foregoing invention that the lifeof the sheet is certainly doubled and may be quadrupled.

What I claim is 1. A leaf for loose leaf books having a series ofperforations adjacent an inner or binding edge for receiving theretaining prongs and having a second series of like perforations locatedalong an outer edge, said sheet having its outer edges free anddisconnected from other sheets.

2. A single leaf for loose'leaf books having a series of perforationsadjacent an inner or binding edge for receiving the retaining prongs andhaving a second series of perforatlons wlth corresponding relativepositions located along the opposite outer edge of the sheet, said sheethaving free outer 11

